diff --git a/build.gradle b/build.gradle
index 206fd30..5c86598 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,5 +1,5 @@
 plugins {
-    id 'org.jetbrains.kotlin.jvm' version '2.3.10'
+    id 'org.jetbrains.kotlin.jvm' version '2.3.20'
 }
 
 group = 'click.seichi'